JP3499335B2 - painting booth - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a coating booth,
For details, install a cleaning liquid flow-down pan at the bottom of the painting work room,
A supply gutter for supplying a cleaning liquid to the cleaning liquid flow-down pan is extended along an upstream side edge of the cleaning liquid flow-down pan, and a flow-down cleaning liquid from the cleaning liquid flow-down pan is provided on the downstream end side of the cleaning liquid flow-down pan. And a coating booth provided with a suction / exhaust passage through which the interior gas of the coating work chamber passes in a confluent state and the paint mist in the passing gas is captured by the cleaning liquid.

[0002]

2. Description of the Related Art Conventionally, as seen in Japanese Utility Model Publication No. 7-25248, in order to supply a cleaning liquid from a supply gutter to a pan for flowing a cleaning liquid, one side wall of the supply gutter is used as an overflow weir over its entire length. The cleaning liquid in the supply gutter was made to uniformly overflow from the whole of the above, and was made to flow out onto the pan for flowing the cleaning liquid.

[0003]

However, the above-mentioned prior art has the following drawbacks.

When the cleaning liquid that has captured the paint mist in the suction / exhaust passage is subjected to the paint separation treatment and then supplied to the supply trough for reuse, there is a paint component that remains unseparated, or in the coating work room. Since paint mist directly contacts the cleaning liquid in the supply gutter, paint sludge is mixed in the cleaning liquid in the supply gutter.These types of paint sludge include floating sludge floating in the cleaning liquid. There is both settling sludge that settles.

By the way, when the above-mentioned conventional technique is used,
Since the cleaning liquid is supplied to the cleaning liquid flow-down pan only by overflow, the settled sludge is not discharged by the overflow and settles and deposits on the bottom of the supply gutter, and as a result, the settling sludge is retained in order to keep the cleaning liquid flow function of the supply gutter good. Very laborious maintenance work such as removal was frequently required.

Further, since the overflow of the cleaning liquid is carried out over the entire length of the supply gutter, when the amount of the cleaning liquid supplied to the supply gutter is limited to an amount such that the thickness of the flowing-down cleaning liquid on the cleaning liquid flow pan is proper without excess or deficiency, overflow occurs. The flow becomes thin, and as a result, floating sludge is caught on the upper end of the side plate of the supply gutter that forms the overflow weir, and it becomes a nucleus, and the trapped floating sludge grows, which causes
There was also a problem that the overflow at the catching part of floating sludge was hindered.

Inhibition of this overflow means that the cleaning liquid cannot be uniformly dispersed and supplied from the supply gutter to the pan where the cleaning liquid flows, and as a result, a film breakage where a cleaning liquid film is not formed on the cleaning liquid flow pan is partially formed. Occurs and the paint mist from the coating work room adheres to the film breakage, and maintenance work to remove this adhered paint is frequently required.In addition, the film breakage reaches the downstream edge of the cleaning liquid flow down pan. Since the cleaning liquid cannot be properly supplied to the suction exhaust passage because it is continuous, the paint mist trapping function in the suction exhaust passage (that is, the function to purify the exhaust gas by trapping and removing the paint mist from the exhaust air from the coating work chamber) There was also a problem of decline.

An object of the present invention is to reduce the maintenance load and prevent the deterioration of the paint mist trapping function in the suction / exhaust passage.

[0009]

[Means for Solving the Problems]

The structure, operation and effect of the invention according to claim 1 are as follows.

[Structure] The supply gutter is provided with a plurality of outlets at predetermined intervals in the extending direction of the gutter body at the bottom of the gutter body extending along the upstream edge of the cleaning liquid flow-down pan. Then, the cleaning liquid in the gutter body is caused to flow out onto the cleaning liquid flow-down pan from the plurality of outlets.

[Operation] That is, the cleaning liquid in the gutter body is caused to flow out from the outlet formed at the bottom of the gutter body onto the cleaning liquid flow down pan, and the cleaning liquid is supplied to the cleaning liquid flow down pan. Along with this, the settling sludge in the gutter body can also be discharged from the outflow port, thereby preventing the accumulation of the settled sludge in the gutter body.

Further, a plurality of the above-mentioned outlets are formed in the bottom portion of the gutter body so as to be arranged at a predetermined interval in the extending direction of the gutter body, so that the cleaning liquid is dispersed in the extending direction of the gutter body and supplied onto the cleaning liquid flowing down pan. However, in the case of these outlets at the bottom of the gutter body, the cleaning liquid and the sludge are caused to flow out under the action of the liquid pressure according to the liquid level in the gutter body, so that the outflow inhibition due to the catching of the sludge such as the overflow weir hardly occurs. It is possible to supply the cleaning liquid onto the cleaning liquid flow down pan while keeping the dispersion state of the cleaning liquid in the extension direction of the gutter main body stably at the desired state, and thus the cleaning liquid film is not formed on the cleaning liquid flow down pan. Part can be prevented from occurring, and the paint mist can be more reliably prevented from adhering to the cleaning liquid flow down pan, and the cleaning liquid can be applied to the suction / exhaust passage. It becomes possible to stably supplied in a state.

[Effect] As a result, it is possible to reduce the maintenance work for removing the sedimentation and sludge in the supply gutter and the maintenance work for removing the paint adhering to the cleaning liquid flow down pan, and the paint mist in the suction / exhaust passage. The trapping function (that is, the room exhaust gas purification function) can be kept high and stable.

The structure, operation, and effect of the invention according to claim 2 are as follows.

[Structure] In the structure of the invention according to claim 1, an outflow guide pipe for guiding the cleaning liquid flowing down from the outflow port in a direction opposite to the cleaning liquid flow-down direction of the cleaning liquid flow-down pan, and an outflow guide pipe. A collision dispersion surface for colliding the outflow cleaning liquid from the guide pipe to disperse the cleaning liquid in the extending direction of the gutter body is provided for each of the outflow ports.

[Operation] That is, the cleaning liquid flows out from the outflow guide tube in the direction opposite to the direction in which the cleaning liquid flows down in the cleaning liquid flow down pan, and the outflowing cleaning liquid collides with the collision dispersion surface to disperse in the extending direction of the gutter body. By doing so, compared with the structure in which a plurality of outlets are simply formed on the bottom of the gutter body,
The cleaning liquid can be more effectively and evenly dispersed in the extending direction of the gutter body and can be supplied onto the pan for flowing the cleaning liquid.

[Effect] As a result, the occurrence of the film break can be prevented more reliably and effectively.

The structure, operation, and effect of the invention according to claim 3 are as follows.

[Structure] In the structure of the invention according to claim 1 or 2, an overflow type in which the cleaning liquid in the gutter main body is supplied to the cleaning liquid flow-down pan through an overflow process at both ends in the extending direction of the gutter main body. Provide an outflow section.

[Operation] That is, by causing the cleaning liquid in the gutter body to flow out by overflow in the overflow type outflow part, a surface layer flow toward both ends in the extending direction of the gutter body is generated as a cleaning liquid flow in the gutter body. ,
By this surface layer flow, the floating sludge in the gutter body is moved to both ends in the extending direction of the gutter body, and the floating sludge is caused to overflow from the gutter body together with the cleaning liquid in the overflow type outflow part.

Since the cleaning liquid outflow from the gutter body due to the overflow is limited to both ends of the gutter body, even if the floating sludge is caught at the overflow part in the overflow type outflow part, the overflow location The trapped suspended sludge is promptly removed in a form in which the trapped sludge is swept away by the limited cleaning liquid flow.

[Effect] As a result, the above-mentioned overflow type outflow part is not provided, and the floating sludge is suspended and accumulated in the gutter body to some extent, and the floating sludge is settled together with the sedimentation sludge at the outlet of the gutter body bottom. It is possible to improve the circulation of the cleaning liquid in the gutter body, as compared to the case where the operation mode is to sequentially flow out from the
It is possible to more effectively achieve stable supply of the cleaning liquid in the extending direction of the gutter body to the intended state and supply of the cleaning liquid onto the pan for flowing the cleaning liquid.

The structure, operation, and effect of the invention according to claim 4 are as follows.

[Structure] In the structure of the invention according to claim 3, the overflow type outflow part has an overflow weir for overflowing the cleaning liquid in the gutter body, and an overflow cleaning liquid from the overflow weir with a gutter structure connected to the gutter body. Accept the overflow gutter,
The overflow gutter is provided at the bottom thereof and has an outlet for flowing the cleaning liquid in the overflow gutter onto the cleaning liquid flow-down pan.

[Operation] That is, as a form of the cleaning liquid flowing out from the overflow type outflow portion onto the cleaning liquid flowing down pan, instead of causing the cleaning liquid to directly flow out onto the cleaning liquid flowing down pan by overflow from the inside of the gutter body, Once the cleaning liquid overflowed via
Accepted in the overflow gutter connected to the gutter body, and
The received cleaning liquid is made to flow from the outlet formed at the bottom of the overflow gutter onto the cleaning liquid flow-down pan, so that the cleaning liquid flows out from the plurality of outlets formed at the bottom of the gutter main body and the extension of the gutter main body. With respect to any outflow of the cleaning liquid from the overflow type outflow portions provided at both ends in the installation direction, the cleaning liquid is supplied to the cleaning liquid downflow pan in the same cleaning liquid outflow form in which the cleaning liquid is drawn out from the gutter bottom and is discharged onto the cleaning liquid downflow pan.

[Effect] As a result, while the overflow occurs at both ends of the gutter main body in the extending direction to form the superficial flow, the extension of the gutter main body including both ends of the gutter main body in the extending direction is performed. Depending on the installation direction, it is possible to form a uniform cleaning liquid film on the cleaning liquid flow down pan after the cleaning liquid flows out onto the cleaning liquid flow down pan, and as a result, it is possible to form a uniform cleaning liquid film on the cleaning liquid flow down pan. In addition to supplying the cleaning liquid onto the pan in which the cleaning liquid flows down while keeping the dispersion state of the cleaning liquid at the desired state in a stable manner, it is possible to more reliably and effectively prevent the occurrence of the film breakage.

The structure, operation, and effect of the invention according to claim 5 are as follows.

[Configuration] In the configuration of the invention according to claim 4, the outlet of the overflow gutter is shaped so as to open from the bottom portion of the overflow gutter to the side wall portion.

[Operation] That is, while the floating sludge is intensively flowed into the overflow gutter from the gutter body together with the cleaning liquid through the overflow weir, the outlet of the overflow gutter is extended from the bottom part of the overflow gutter to the side wall part. Due to the opening shape, the floating sludge concentratedly flowing into the overflow gutter from the gutter body is quickly discharged from the overflow gutter as compared with the structure in which the outlet of the overflow gutter is formed only at the bottom of the overflow gutter.

[Effect] As a result, the floating sludge is prevented from accumulating inside the overflow gutter, and the floating sludge in the gutter body is caused to flow out from the overflow type outflow portions at both ends in the extending direction of the gutter body. It is possible to favorably maintain both the function and the function of supplying the cleaning liquid to the pan for flowing the cleaning liquid from these overflow type outflow portions.

The structure, operation, and effect of the invention according to claim 6 are as follows.

[Structure] In the structure of the invention according to claim 4 or 5, an outflow guide chute for guiding the cleaning liquid flowing down from the outlet of the overflow gutter and flowing out in a direction opposite to the cleaning liquid flowing down direction of the cleaning liquid flowing down pan. And a collision dispersion surface for colliding the outflow cleaning liquid from the outflow guide chute to disperse it in the extending direction of the gutter body.

[Operation] That is, as for the overflow type outflow portions provided at both ends in the extending direction of the gutter body, the cleaning liquid in the overflow gutter is washed from the outflow guide shout as in the case of the invention according to the second aspect. It is possible to form a simple outlet in the overflow gutter by causing the washing liquid to flow out in the direction opposite to the downward direction of the washing liquid in the falling pan, and colliding this outflow washing liquid with the collision dispersion surface to disperse it in the extension direction of the gutter body. Compared with the structure, the cleaning liquid from the overflow gutter can be more effectively and evenly distributed in the extending direction of the gutter body and can be supplied onto the cleaning liquid falling pan.

[Effect] As a result, it is possible to effectively prevent the breakage of the film even with respect to the cleaning liquid supplied from the overflow type outflow portions provided at both ends in the extending direction of the gutter body.

The structure, operation and effect of the invention according to claim 7 are as follows.

[Structure] In the structure of the invention according to claim 2 or 6, the side wall surface of the coating work chamber is the collision dispersion surface.

[Operation] That is, paying attention to the fact that the supply gutter is arranged near the side wall surface of the coating work chamber, the side wall face of the coating work chamber is also used as the collision dispersion surface.

[Effect] As a result, in forming the collision dispersion surface, it is possible to simplify the structure without adding a dedicated forming member and to facilitate the production.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION A coating booth, as shown in FIG. 1, is provided with a coating work chamber 1 for coating an object T, and the coating work chamber 1 is for ventilation from almost the entire ceiling portion. A ceiling outlet 2 that blows air downward in a laminar flow is formed, a suction exhaust passage 3 is formed in the center of the bottom of the coating work chamber 1 in the chamber width direction, and the space above the ceiling is directed to the ceiling outlet 2. As the air supply chamber 4, an air supply fan 5 that supplies ventilation air to the air supply chamber 4 and an exhaust fan 6 that sucks and exhausts the indoor air A of the coating work chamber 1 through the suction and exhaust passage 3 are provided. Configured.

The coating work chamber 1 is composed of an upper work chamber portion 1A equipped with a coating robot 8 and an exhaust chamber portion 1B formed below it, and a space between the working chamber portion 1A and the exhaust chamber portion 1B. A lattice-shaped floor 9 is provided to allow exhaust gas to pass downward from the work chamber portion 1A. That is, the upper working chamber 1A
In the above, the coating object 8 conveyed by the conveyor 7 is automatically spray-painted by the coating robot 8, and the surplus paint mist generated by this coating is blown out of the ventilation air from the ceiling outlet 2 and sucked in the suction exhaust passage 3. With the action, the air is discharged downward from the work chamber 1A together with the downward exhaust from the work chamber 1A to the exhaust chamber 1B.

At the bottom of the coating work chamber 1, as shown in FIG. 2, the suction / exhaust passage 3 from both outer ends in the chamber width direction to the center.
A pair of cleaning liquid flow-down pans 10 extending in a downward inclined posture toward each other are provided, and the cleaning liquids are provided on the upstream end side of the cleaning liquid flow-down pans 10 (that is, both outer ends in the chamber width direction at the bottom of the coating work chamber 1). Supply gutters 11 for supplying the cleaning liquid W to the downflow pan 10 are extended in a posture along the upstream side edges of the respective cleaning liquid downflow pans 10, and supply pipes 12 for supplying the cleaning liquid W to these supply gutters 11 are respectively supplied. It is connected to the gutter 11.

That is, the paint mist and the falling paint slag are prevented from adhering to the cleaning liquid falling pan 10 by the cleaning liquid W which is supplied from the supply gutter 11 to the cleaning liquid falling pan 10 and flows down like a film on the cleaning liquid falling pan 10. Meanwhile, a process of concentrating the exhaust A from the coating work chamber 1 into the suction exhaust passage 3 and passing the exhaust A and the downwashing liquid W from the washing liquid downflow pan 10 at high speed to the suction exhausting passage 3 in a combined state. so,
The paint mist in the exhaust gas A is captured by the cleaning liquid W to purify the exhaust gas A.

As shown in FIGS. 3 and 4, the supply gutter 11 has a plurality of outlets 14 at the bottom of a gutter main body 13 extending along the upstream side edge of the cleaning liquid flow-down pan 10. Thirteen
Of the overflow type outflow portion 1 at both ends in the extending direction of the gutter body 13 while being formed at a predetermined interval L in the extending direction of the
5, the cleaning liquid W in the gutter main body 13 is supplied from the plurality of outlets 14 and the overflow type outflow portions 15 at both ends.
Is made to flow out onto the washing liquid flow down pan 10.

Further, the above-mentioned supply pipe 12 has a structure as shown in FIG.
As shown in FIG. 4, a structure in which the cleaning liquid W is supplied to the inside of the gutter body 13 in a lateral direction from the side wall surface 1a of the coating work chamber 1 toward the center of the coating work chamber 1 at the central portion in the extending direction of the gutter body 13. While the cleaning liquid W supplied from the supply pipe 12 collides with the side plate of the gutter body 13 and the liquid level rises, a part 13A of the side plate of the gutter body 13 facing the connection port 16 of the supply pipe 12 is formed. Is formed higher than the other portions in order to prevent the cleaning liquid W from overflowing due to the rising of the liquid surface, and the baffle plate 17 for suppressing the rising of the cleaning liquid W is vertically positioned at the connection port facing portion 13A. It is attached via bolts and nuts 18 so that it can be changed.

The outlet 1 formed at the bottom of the gutter body 13
As shown in FIG. 3, the cleaning liquid W flowing down from the outflow port 14 has a direction opposite to that of the cleaning liquid flowing down pan 10 (i.e., outward in the width direction of the coating work chamber 1). An outflow guide pipe 19 for guiding and flowing out obliquely downward is connected, and the side wall surface 1 of the coating work chamber 1 is connected.
Collision dispersion surface 2 that disperses a in the extending direction of the gutter body 13 by colliding the outflow cleaning liquid W from these outflow guide tubes 19.
It is made to function as 0.

The overflow type outflow portions 15 at both ends of the gutter main body 13 supply the cleaning liquid W in the gutter main body 13 onto the cleaning liquid flow-down pan 10 through the overflow process. As shown in FIG. 5 and FIG. 6, an overflow weir 21 that overflows the cleaning liquid W in the gutter main body 13, an overflow gutter 22 that receives the overflow cleaning liquid W from the overflow weir 21 with a gutter structure connected to the gutter main body 13, and the overflow gutter An outlet 2 for letting the cleaning liquid W in the overflow gutter 22 flow out onto the cleaning liquid flow-down pan 10 in a shape opening from the bottom of 22 to the gutter side wall on the side wall 1a side of the coating work chamber 1.
3 and 3.

As in the case of the outflow guide tube 19, the cleaning liquid W flowing down from the outlet 23 of the overflow gutter 22.
Is provided in the opposite direction (outward in the width direction of the coating work chamber 1) opposite to the direction in which the cleaning liquid flow down pan 10 flows downward, and an outflow guide chute 24 is provided to allow the liquid to flow out. The side wall surface 1a is made to function as a collision dispersion surface 25 which collides the outflow cleaning liquid W from the outflow guide chute 24 and disperses it in the extending direction of the gutter body 13.

The outlet 23 of the overflow gutter 22
And the closest one of the outlets 14 at the bottom of the gutter body 13 is made equal to the distance L between the outlets 14 at the bottom of the gutter body 13, whereby the cleaning liquid is supplied to the downflow pan 10. The cleaning liquid W is dispersed as evenly as possible in the extending direction of the gutter body 13 including the vicinity of both ends of the gutter body 13. Also, overflow weir 2
1 is mounted via bolts and nuts 26 so that the height can be adjusted freely, and the floating paint sludge in the gutter body 13 is the cleaning liquid W.
At the same time, the overflow flow rate of the cleaning liquid W in the overflow weir 21 (that is, the outlet 2 in the overflow gutter 22 is taken into consideration while considering whether or not it smoothly flows out to the overflow gutter 22 side through the overflow weir 21.
The flow rate of the cleaning liquid from 3) is adjusted by adjusting the height of the overflow weir 21.

The outlet 23, which is opened from the bottom of the overflow gutter 22 to the side wall, allows the floating paint sludge that has flowed into the overflow gutter 22 from the gutter body 13 to smoothly flow out without being caught. It is formed by being positioned above the cleaning liquid surface a in the overflow gutter 22 (especially in this example, the overflow gutter 2).
The side wall 2 is cut out to form the outlet 23 in a shape without an upper edge).

[Other Embodiments] In the above embodiment, the overflow type outflow portions 15 are provided at both ends of the gutter body 13, but as shown in FIG. 8, the overflow type outflow portion 15 is provided only at one end of the gutter body 13. Alternatively, the cleaning liquid may be supplied from the other end through the supply pipe 12 to generate a cleaning liquid flow from the other end to the one end.

In implementing the invention according to claim 1, a structure in which the overflow type outflow portion 15 is omitted may be adopted.

In the above embodiment, the supply gutter 11 is linearly extended. However, for example, the cleaning liquid flow-down pan 1 is provided.
0 is a circular cleaning liquid flow-down pan 10 having a suction / exhaust passage 3 in the center in a plan view and an outer peripheral edge being an upstream side edge, whereas the gutter body 13 is provided on the upstream side of the circular cleaning liquid flow-down pan 10. The present invention can also be applied to the case of extending in an arc shape along the edge portion (outer peripheral edge portion).

The shape of the discharge port of the outflow guide tube 19 is not limited to a circular shape, and various opening shapes can be adopted. For example, the cleaning liquid can be more effectively dispersed in the extending direction of the gutter body 13. Therefore, a flat opening shape may be adopted in which the extending direction of the gutter body 13 is the longitudinal direction.

As the cleaning liquid W, various liquids such as water, an aqueous solution, or other liquid agents can be adopted.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment.

FIG. 2 is a cross-sectional plan view showing an embodiment.

FIG. 3 is a front view of a notch of a main part showing an embodiment.

FIG. 4 is a side view of a main part showing an embodiment.

FIG. 5 is a vertical cross-sectional side view of essential parts showing an embodiment.

FIG. 6 is a front view of a notch of essential parts showing an embodiment.

FIG. 7 is a vertical cross-sectional front view of essential parts showing the embodiment.

FIG. 8 is a schematic cross-sectional plan view showing another embodiment.

[Explanation of symbols]

1 Painting work room 10 Washing liquid falling pan W cleaning liquid 11 Supply gutter A passing gas 3 suction exhaust path 13 Gutter body 14 Outlet 19 Outflow guide tube 20 Collision dispersion surface 15 Overflow type outflow section 21 Overflow weir 22 Overflow gutter 23 Outlet 24 Outflow guide chute 25 Collision dispersion surface 1a Side wall surface

Claims (7)

(57) [Claims] 1. A cleaning liquid flow down pan (10) is provided at the bottom of a coating work chamber (1), and a supply gutter (11) for supplying the cleaning liquid (W) to the cleaning liquid flow down pan (10) is provided with the cleaning liquid flow down (10). It extends along the upstream side edge of the pan (10), and on the downstream end side of the cleaning liquid flow down pan (10), the flow-down cleaning liquid (W) from the cleaning liquid flow down pan (10) and the coating work chamber ( A coating booth provided with a suction / exhaust passage (3) for allowing the paint mist in the passing gas (A) to be trapped in the cleaning liquid (W) by passing through the indoor gas (A) of 1) in a confluent state, The gutter (11) has a plurality of outlets (14) extending from the gutter body (13) at the bottom of the gutter body (13) extending along the upstream side edge of the cleaning liquid downflow pan (10). A plurality of outlets (14) formed at predetermined intervals in the direction.
A coating booth configured to allow the cleaning liquid (W) in the gutter body (13) to flow out onto the cleaning liquid flow-down pan (10). 2. An outflow guide pipe (19) for guiding the cleaning liquid (W) flowing down from the outflow port (14) in the direction opposite to the cleaning liquid flowing down direction of the cleaning liquid flowing down pan (10) to flow out.
And a collision dispersion surface (20) for colliding the outflow cleaning liquid (W) from the outflow guide pipe (19) and dispersing it in the extension direction of the gutter body (13), respectively. The coating booth according to claim 1, which is provided for the. 3. An overflow for supplying the cleaning liquid (W) in the gutter body (13) to the cleaning liquid flow-down pan (10) through an overflow process at both ends of the gutter body (13) in the extending direction. The coating booth according to claim 1 or 2, further comprising a flow-out section (15). 4. The overflow type outflow section (15)
Is an overflow weir (21) that overflows the cleaning liquid (W) in the gutter body (13) and a gutter structure that is continuous with the gutter body (13).
An overflow gutter (22) that receives the overflow cleaning liquid (W) from the (1), and an overflow gutter (2)
The overflow gutter (22) formed at the bottom of 2)
The coating booth according to claim 3, wherein the coating booth has an outlet (23) through which the cleaning liquid (W) therein flows out onto the cleaning liquid flow-down pan (10). 5. The coating booth according to claim 4, wherein the outlet (23) of the overflow gutter (22) is shaped to open from the bottom of the overflow gutter (22) to the side wall. 6. An outflow guide chute () for guiding the cleaning liquid (W) flowing down from the outlet (23) of the overflow gutter (22) in the direction opposite to the cleaning liquid flowing down direction of the cleaning liquid falling pan (10) to flow out. 24) and the outflow cleaning liquid (W) from the outflow guide chute (24) are collided and dispersed in the extending direction of the gutter body (13).
5) The coating booth according to claim 4 or 5, further comprising: 7. A side wall surface (1a) of the coating work chamber (1).
The coating booth according to claim 2 or 6, wherein said collision dispersion surfaces (20), (25) are formed.